ReSharper 2017.3 Help

Keymap:

Code Inspection: Adjust modifiers declaration order

C# modifiers of types and type members can be written in any order. However, arranging them in a similar way throughout your code is a good practice, which improves code readability. Besides, you may prefer using or not using private and internal modifiers explicitly.

By default, ReSharper suggests to use private and internal modifiers explicitly, and to arrange modifiers in a specific order. If necessary, you can flexibly configure these preferences.